The article surveys action taken by the European Community to combat fraud aecting its ®nancial interests, focusing on the development of investigative authority granted to OLAF, the European`Oce Pour La Lutte AntiFraude' and its impact on the procedural rights of the alleged defrauder. It shows that the involvement of OLAF can be crucial for a national fraud investigation and subsequent criminal prosecution and that it meets the criteria set out by the Strasbourg organs for the applicability of Article 6 ECH. The article explores whether the legal sources governing the activities of OLAF or nationalÐor rather, CommunityÐlaw guarantee sucient protection for the alleged defrauder and thus pay respect to principles arising from the rule of law in law enforcement. It is shown that general principles of Community law, which were mostly established in antitrust law, may provide a certain protection for the suspect, but may not protect him in all regards. It is thus argued that, in the long run, it will be necessary to provide special fair-trial rights which oer protection to alleged defrauders from those infringements arising out of the speci®c features of a Community investigation.